export function debounce(func,delay=100){
    let timer = null
    return function(...args){
      if(timer)clearTimeout(timer)
      timer = setTimeout(() => {
        func.apply(this,args)
      },delay)
    }
  }

//时间戳转成时间
export function formatDate(date,fmt){
  //1.获取年份
  if(/(y+)/.test(fmt)){
    fmt = fmt.replace(RegExp.$1,(date.getFullYear() + '').substr(4 - RegExp.$1.length));
  }

  //2.获取
  let o = {
    'M+': date.getMonth() + 1,
    'd+': date.getDate(),
    'h+': date.getHours(),
    'm+': date.getMinutes(),
    's+': date.getSeconds()
  };
  for(let k in o){
    if(new RegExp(`(${k})`).test(fmt)){
      let str = o[k] + '';
      fmt = fmt.replace(RegExp.$1,(RegExp.$1.length === 1) ? str : padLeftZero(str));
    }
  }
  return fmt;
};

function padLeftZero(str){
  return ('00' + str).substr(str.length);
}